Environmental chamber



FIG. 1 is a front perspective view of an environmental chamber embodyingmy design;

FIG. 2 is a top plan view of the environmental chamber as shown in FIG.1;

FIG. 3 is a front elevational view of the environmental chamber as shownin FIG. 1;

FIG. 4 is a left side view of the environmental chamber as shown in FIG.1;

FIG. 5 is a rear elevational view of the environmental chamber as shownin FIG. 1;

FIG. 6 is a right side elevational view of the environmental chamber asshown in FIG. 1; and,

FIG. 7 is a bottom plan view of the environmental chamber as shown inFIG. 1.

The broken line showing is included for the purpose of illustratingenvironmental subject matter and forms no part of the claimed design.

The ornamental design for an environmental chamber, as shown anddescribed.